<template>
	<view>
		<view class="search-box">
			<uni-search-bar @input="input" :radius="100"  focus="true"
							>
			</uni-search-bar>
			
		</view>
		<!--搜索建议列表-->
		<view class="sugg-list" v-if="searchResults.length!==0">
			<view class="sugg-item" v-for="(item,i) in searchResults" :key="i" @click="gotoDetail(item)">
				<view class="goods-name">{{item.goods_name}}</view>
				<uni-icons type="arrowright" size="16"></uni-icons>
			</view>
		</view>
		<!--搜索历史列表-->
		<view class="history-box" v-else>
			<!--标题区-->
			<view class="history-title">
				<text>搜索历史</text>
				<uni-icons type="trash" size="16" @click="clean"></uni-icons>
			
			</view>
			<!--列表区-->
			<view class="history-list">
				<uni-tag  :text="item" v-for=" (item,i) in historyList" :key="i" custom-style="margin-top: 5px;margin-right: 5px;" @click="gotoGoodsList(item)"></uni-tag>
			</view>
		</view>
		
	</view>
</template>

<script>
	export default {
		data() {
			return {
				timer:null,//延时器
				kw:'',//搜索内容
				//搜索结果列表
				searchResults:[],
			
				//历史搜索记录
				historyList:[]
			};
		},
		onLoad() {
			this.historyList=JSON.parse(uni.getStorageSync('kw')||'[]')
		},
		methods:{
			input(e){
				//清除timer延时器
				clearTimeout(this.timer)
				//重新启动一个延时器
				this.timer=setTimeout(()=>{
					this.kw=e
					this.getSearchList()
				},500)//如果在500毫秒以外不打字了，就打印
			},
			async getSearchList(){
				//判断搜索关键词是否为空
				if(this.kw.length==0){
					this.searchResults=[]
					return
				}
				const{data:res}=await uni.$http.get('/api/public/v1/goods/qsearch',{query:this.kw})
				if(res.meta.status!==200){
					return uni.$showMsg()
				}
				this.searchResults=res.message
				this.saveSearchHistory()
			
			},
			gotoDetail(item){
				console.log(item.goods_id)
				uni.navigateTo({
					url:'/subpkg/goods_detail/goods_detail?goods_id= '+item.goods_id
				})
			},
			saveSearchHistory(){
				//保存历史搜索记录
				// this.historyList.unshift(this.kw)
				const set= new Set(this.historyList)
				set.delete(this.kw)
				const NewSet=new Set([this.kw,...set])
				
				this.historyList=Array.from(NewSet)
				//对历史数据持久化存储
				uni.setStorageSync('kw',JSON.stringify(this.historyList))
				
			},
			clean(){
				this.historyList=[]
				uni.setStorageSync('kw','[]')
			},
			gotoGoodsList(kw){
				uni.navigateTo({
					url:'/subpkg/goods_list/goods_list?query='+kw
				})
			}
			
		}
	}
</script>

<style lang="scss">
.search-box{
	position: sticky;
	top: 0;
	z-index: 999;
}
.sugg-list{
	padding: 0 5px;
	.sugg-item{
		display: flex;
		align-items: center;
		justify-content: space-between;
		font-size: 12px;
		padding: 12px 0;
		border-bottom: 1px solid #efefef;
		.goods-name{
			white-space: nowrap;//文本单行显示 
			overflow: hidden;//超出内容隐藏
			text-overflow:ellipsis;//用。。。省略
			margin-right: 3px;
		}
	}
}
.history-box{
	padding: 0 5px;
	.history-title{
		display: flex;
		justify-content: space-between;
		height: 40px;
		align-items: center;
		font-size: 13px;
		border-bottom:1px solid #efefef ;
		
		.history-list{
			display: flex;
			flex-wrap: wrap;
			
		}
	}
}
</style>
